CN105198263A - Preparation method of concrete early strength agent - Google Patents
Preparation method of concrete early strength agent Download PDFInfo
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- CN105198263A CN105198263A CN201510724595.XA CN201510724595A CN105198263A CN 105198263 A CN105198263 A CN 105198263A CN 201510724595 A CN201510724595 A CN 201510724595A CN 105198263 A CN105198263 A CN 105198263A
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Abstract
The invention discloses a preparation method of a concrete early strength agent. Firstly, allyl polyethylene glycol, acrylic acid, sodium methallyl sulfonate, maleic anhydride and tert-butyl peroxybenzoate are mixed, heated, kept warm and cooled to the room temperature, octadecanol, p-toluenesulfonic acid and ethyl acetate are added, heated, kept warm and cooled to the room temperature, octadecanol, p-toluenesulfonic acid and ethyl acetate are added, heated, kept warm and cooled to the room temperature, a mixture A is sequentially washed with a sulfuric acid aqueous solution with the volume percentage being 1%-3%, a NaOH aqueous solution with the volume percentage being 1%-3% and water, air-dried and then mixed with benzotriazole, 2,6-tert-butyl paracresol, hexamethylenetetramine, trimellitate, a surfactant, triisopropanolamine, sodium nitrite, sodium sulfate, calcium chloride, aluminum potassium sulfate and ethanol, the mixture is stirred, and the concrete early strength agent is obtained. The early strength agent can substantially improve the early strength and the later strength of concrete and shorten the construction period and further has excellent performance of water reduction, plasticity maintaining, rusting prevention and stability.
Description
Technical field
The invention belongs to technical field of concrete additives, be specifically related to a kind of preparation method of concrete early strength agent.
Background technology
The class artificial material that concrete is by gelling material, gather materials, admixture and water are formed.Not only be widely used in various civil engineering work, and the exploitation, geothermal engineering etc. in mechanical industry, shipbuilding, ocean, concrete is also important material.And high performance concrete has been acknowledged as 21 century maximum material of construction, represents the developing direction of concrete technology.Concrete admixture is the preparation concrete indispensable material of modern high performance and core technology, is also the critical material that concrete develops to high-tech area, is considered to the third time technological breakthrough after Steel Concrete and prestressed concrete technology.Owing to mix admixture in concrete after, some performances of cement minerals aquation and cement itself can be affected, as many performances such as concrete porosity, setting rate, microtexture and intensity also all will change.Like this, the fast development along with high performance concrete new technology has promoted the development of admixture, and on the contrary, the progress of admixture Synthesis and applications technology facilitates again the application of high performance concrete.
Concrete early strength agent refers to the admixture that can improve early age strength of concrete, adopt when many construction or rush repair in the winter time, the concrete early strength agent that current China comparatively commonly uses mainly contains villaumite system, vitriol system, carbonate system, organic system, mineral substance and complex accelerator, the most frequently used several classes mainly comprise: (1) chloride salt hardening accelerator: mainly contain calcium chloride, sodium-chlor, Repone K, amine oxide, ferric oxide, aluminum oxide etc., chloride salt hardening accelerator all has good early strength function, wherein calcium chloride early by force effective and also cost is low, most widely used; (2) Sulfates hardening accelerator: mainly contain sodium sulfate (i.e. Sodium sulfate anhydrous.min(99)), Sulfothiorine, calcium sulfate, Tai-Ace S 150, potassium aluminium sulfate etc., wherein sodium sulfate application is more; (3) organism class hardening accelerator: organic amine hardening accelerator mainly contains trolamine (being called for short TEA), tri-isopropanolamine (being called for short TP), diethanolamine etc., and wherein early potent fruit is good with trolamine.In engineering, above a few class hardening accelerator can singly be mixed or composite.Villaumite system hardening accelerator has obvious action of rust to reinforcing bar, and therefore the application of chlorination system hardening accelerator is little.Also owing to causing concrete " scum ", and there is alkali-aggregate reaction harm risk in vitriol system hardening accelerator, its application is also very restricted.Some other kind hardening accelerator, or there is early strong poor effect, or affect later strength, or there are raw material sources, difficulty produces high in cost of production problem.
Building material technical field is necessary develop the hardening accelerator kind that makes new advances to avoid defect existing in prior art.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and the preparation method that provides a kind of concrete early strength agent, gained hardening accelerator can increase substantially concrete early stage and later strength, shortening construction period.
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 3 ~ 7 parts, 1 ~ 5 part, vinylformic acid, methylpropene sodium sulfonate 3 ~ 6 parts, maleic anhydride 2 ~ 5 parts, peroxidized t-butyl perbenzoate 0.8 ~ 3.5 part mixing, heating, insulation 4 ~ 6h, after being cooled to room temperature, add stearyl alcohol 1 ~ 4 part, tosic acid 2 ~ 5 parts, ethyl acetate 1 ~ 6 part, be warming up to 140 ~ 150 DEG C, insulation 8 ~ 12h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 1% ~ 3%, the NaOH aqueous solution of mass percent 1% ~ 3% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B5 ~ 12 part, benzotriazole 1 ~ 5 part, 2,6-Butylated Hydroxytoluene 2 ~ 4 parts, vulkacit H 3 ~ 6 parts, trimellitate 1 ~ 4 part, 3 ~ 7 parts, tensio-active agent, tri-isopropanolamine 2 ~ 5 parts, Sodium Nitrite 1 ~ 4 part, 3 ~ 6 parts, sodium sulfate, 2 ~ 5 parts, calcium chloride, potassium aluminium sulfate 3 ~ 6 parts, ethanol 10 ~ 15 parts mixing, stir, to obtain final product.
Further, described tensio-active agent refers to sodium alkyl benzene sulfonate, trolamine, span 80.
Further, described sodium alkyl benzene sulfonate refers to octadecyl benzenesulfonic acid sodium.
Further, in step 1, Heating temperature is 90 ~ 110 DEG C.
Further, in step 1, temperature-rise period is temperature programming, 5 DEG C/min.
Further, in step 3, stirring velocity is 300 ~ 500rpm, and churning time is 15 ~ 20min.
Further, also need in step 3 to add sodium napthionate 1 ~ 5 part.
Hardening accelerator of the present invention not only can increase substantially concrete early stage and later strength, shortening construction period, also has good diminishing, protects and mould, hinder rust and stability.
Embodiment
Embodiment 1
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 3 parts, 1 part, vinylformic acid, methylpropene sodium sulfonate 3 parts, maleic anhydride 2 parts, peroxidized t-butyl perbenzoate 0.8 part mixing, heating, insulation 4h, after being cooled to room temperature, add stearyl alcohol 1 part, tosic acid 2 parts, ethyl acetate 1 part, be warming up to 140 DEG C, insulation 8h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 1%, the NaOH aqueous solution of mass percent 1% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B5 part, benzotriazole 1 part, 2,6-Butylated Hydroxytoluene 2 parts, vulkacit H 3 parts, trimellitate 1 part, 3 parts, tensio-active agent, tri-isopropanolamine 2 parts, Sodium Nitrite 1 part, 3 parts, sodium sulfate, 2 parts, calcium chloride, potassium aluminium sulfate 3 parts, ethanol 10 parts mixing, stir, to obtain final product.
Wherein, described tensio-active agent refers to trolamine; In step 1, Heating temperature is 90 DEG C, and temperature-rise period is temperature programming, 5 DEG C/min; In step 3, stirring velocity is 300rpm, and churning time is 20min.
Embodiment 2
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 6 parts, 2 parts, vinylformic acid, methylpropene sodium sulfonate 4 parts, maleic anhydride 3 parts, peroxidized t-butyl perbenzoate 1.3 parts mixing, heating, insulation 4h, after being cooled to room temperature, add stearyl alcohol 2 parts, tosic acid 4 parts, ethyl acetate 2 parts, be warming up to 140 DEG C, insulation 8h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 2%, the NaOH aqueous solution of mass percent 2% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B9 part, benzotriazole 4 parts, 2,6-Butylated Hydroxytoluene 3 parts, vulkacit H 5 parts, trimellitate 2 parts, 6 parts, tensio-active agent, tri-isopropanolamine 3 parts, Sodium Nitrite 2 parts, 5 parts, sodium sulfate, 4 parts, calcium chloride, potassium aluminium sulfate 5 parts, ethanol 12 parts mixing, stir, to obtain final product.
Wherein, described tensio-active agent refers to octadecyl benzenesulfonic acid sodium; In step 1, Heating temperature is 100 DEG C, and temperature-rise period is temperature programming, 5 DEG C/min; In step 3, stirring velocity is 400rpm, and churning time is 20min.
Embodiment 3
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 6 parts, 4 parts, vinylformic acid, methylpropene sodium sulfonate 5 parts, maleic anhydride 4 parts, peroxidized t-butyl perbenzoate 2.1 parts mixing, heating, insulation 4h, after being cooled to room temperature, add stearyl alcohol 3 parts, tosic acid 3 parts, ethyl acetate 2 parts, be warming up to 150 DEG C, insulation 8h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 1%, the NaOH aqueous solution of mass percent 1% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B9 part, benzotriazole 4 parts, 2,6-Butylated Hydroxytoluene 3 parts, vulkacit H 4 parts, trimellitate 3 parts, 6 parts, tensio-active agent, tri-isopropanolamine 4 parts, Sodium Nitrite 2 parts, 5 parts, sodium sulfate, 4 parts, calcium chloride, potassium aluminium sulfate 5 parts, ethanol 13 parts mixing, stir, to obtain final product.
Wherein, described tensio-active agent refers to span 80; In step 1, Heating temperature is 90 DEG C, and temperature-rise period is temperature programming, 5 DEG C/min; In step 3, stirring velocity is 400rpm, and churning time is 20min.
Embodiment 4
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 7 parts, 5 parts, vinylformic acid, methylpropene sodium sulfonate 6 parts, maleic anhydride 5 parts, peroxidized t-butyl perbenzoate 3.5 parts mixing, heating, insulation 6h, after being cooled to room temperature, add stearyl alcohol 4 parts, tosic acid 5 parts, ethyl acetate 6 parts, be warming up to 150 DEG C, insulation 12h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 3%, the NaOH aqueous solution of mass percent 3% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixing B 12 part, benzotriazole 5 parts, 2,6-Butylated Hydroxytoluene 4 parts, vulkacit H 6 parts, trimellitate 4 parts, 7 parts, tensio-active agent, tri-isopropanolamine 5 parts, Sodium Nitrite 4 parts, 6 parts, sodium sulfate, 5 parts, calcium chloride, potassium aluminium sulfate 6 parts, ethanol 15 parts mixing, stir, to obtain final product.
Embodiment 5
The difference of the present embodiment and embodiment 3 is: also need in step 3 to add sodium napthionate 1 ~ 5 part.
A preparation method for concrete early strength agent, comprises the following steps:
Step 1, with parts by weight, by allyl polyglycol 6 parts, 4 parts, vinylformic acid, methylpropene sodium sulfonate 5 parts, maleic anhydride 4 parts, peroxidized t-butyl perbenzoate 2.1 parts mixing, heating, insulation 4h, after being cooled to room temperature, add stearyl alcohol 3 parts, tosic acid 3 parts, ethyl acetate 2 parts, be warming up to 150 DEG C, insulation 8h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 1%, the NaOH aqueous solution of mass percent 1% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B9 part, benzotriazole 4 parts, 2,6-Butylated Hydroxytoluene 3 parts, vulkacit H 4 parts, trimellitate 3 parts, 6 parts, tensio-active agent, tri-isopropanolamine 4 parts, Sodium Nitrite 2 parts, 5 parts, sodium sulfate, 4 parts, calcium chloride, potassium aluminium sulfate 5 parts, ethanol 13 parts, sodium napthionate 4 parts mixing, stir, to obtain final product.
Wherein, described tensio-active agent refers to span 80; In step 1, Heating temperature is 90 DEG C, and temperature-rise period is temperature programming, 5 DEG C/min; In step 3, stirring velocity is 400rpm, and churning time is 20min.
Carry out performance test with reference to GB8076-2008 " mixed earth admixture " to embodiment 1 to 5 gained water reducer, result is as follows:
As seen from the above table, hardening accelerator of the present invention has good diminishing, guarantor moulds, hinder rust and stability, owing to adding sodium napthionate in embodiment 5, the water-reducing rate of hardening accelerator and ultimate compression strength is improved.
Claims (7)
1. a preparation method for concrete early strength agent, is characterized in that: comprise the following steps:
Step 1, with parts by weight, by allyl polyglycol 3 ~ 7 parts, 1 ~ 5 part, vinylformic acid, methylpropene sodium sulfonate 3 ~ 6 parts, maleic anhydride 2 ~ 5 parts, peroxidized t-butyl perbenzoate 0.8 ~ 3.5 part mixing, heating, insulation 4 ~ 6h, after being cooled to room temperature, add stearyl alcohol 1 ~ 4 part, tosic acid 2 ~ 5 parts, ethyl acetate 1 ~ 6 part, be warming up to 140 ~ 150 DEG C, insulation 8 ~ 12h, be cooled to room temperature, obtain mixture A;
Step 2, is the aqueous sulfuric acid of 1% ~ 3%, the NaOH aqueous solution of mass percent 1% ~ 3% and water washing through volume percent successively by step 1 gained mixture A, dries, obtain mixture B;
Step 3, with parts by weight, by step 2 gained mixture B5 ~ 12 part, benzotriazole 1 ~ 5 part, 2,6-Butylated Hydroxytoluene 2 ~ 4 parts, vulkacit H 3 ~ 6 parts, trimellitate 1 ~ 4 part, 3 ~ 7 parts, tensio-active agent, tri-isopropanolamine 2 ~ 5 parts, Sodium Nitrite 1 ~ 4 part, 3 ~ 6 parts, sodium sulfate, 2 ~ 5 parts, calcium chloride, potassium aluminium sulfate 3 ~ 6 parts, ethanol 10 ~ 15 parts mixing, stir, to obtain final product.
2. the preparation method of concrete early strength agent according to claim 1, is characterized in that: described tensio-active agent refers to sodium alkyl benzene sulfonate, trolamine, span 80.
3. the preparation method of concrete early strength agent according to claim 1, is characterized in that: described sodium alkyl benzene sulfonate refers to octadecyl benzenesulfonic acid sodium.
4. the preparation method of concrete early strength agent according to claim 1, is characterized in that: in step 1, Heating temperature is 90 ~ 110 DEG C.
5. the preparation method of concrete early strength agent according to claim 1, is characterized in that: in step 1, temperature-rise period is temperature programming, 5 DEG C/min.
6. the preparation method of concrete early strength agent according to claim 1, is characterized in that: in step 3, stirring velocity is 300 ~ 500rpm, and churning time is 15 ~ 20min.
7. the preparation method of concrete early strength agent according to claim 1, is characterized in that: also need in step 3 to add sodium napthionate 1 ~ 5 part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467370A (en) * | 2019-08-30 | 2019-11-19 | 徐州金盟新型建材有限公司 | A kind of cement concrete early strength agent |
| CN111470797A (en) * | 2020-04-10 | 2020-07-31 | 广西科达建材化工有限公司 | Concrete corrosion inhibitor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011660A (en) * | 2012-12-21 | 2013-04-03 | 江西迪特科技有限公司 | Method for preparing concrete water reducing agent, method for preparing concrete early strength agent through water reducing agent and construction method for concrete early strength agent |
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- 2015-11-01 CN CN201510724595.XA patent/CN105198263A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011660A (en) * | 2012-12-21 | 2013-04-03 | 江西迪特科技有限公司 | Method for preparing concrete water reducing agent, method for preparing concrete early strength agent through water reducing agent and construction method for concrete early strength agent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467370A (en) * | 2019-08-30 | 2019-11-19 | 徐州金盟新型建材有限公司 | A kind of cement concrete early strength agent |
| CN111470797A (en) * | 2020-04-10 | 2020-07-31 | 广西科达建材化工有限公司 | Concrete corrosion inhibitor |
| CN111470797B (en) * | 2020-04-10 | 2022-04-19 | 广西科达建材化工有限公司 | Concrete corrosion inhibitor |
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Application publication date: 20151230 |